<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body>
<form action="HelloWorld" method="post">
<input type="text" name="name" placeholder="帐号"><br>
<input type="password" name="password" placeholder="密码"><br>
<input type="number" name="age" placeholder="年龄"  min="0" max="199" style="width: 171px"><br>
<!-- <input type="number" name="height" placeholder="身高" min="0"><br>
<input type="number" name="money" placeholder="财产" min="0"><br> -->
<input type="submit" value="提交">
</form>
</body>
</html>